61/100CR Score
Ranked #1 because of its Google rating and review volume: 5.0★ from 579 Google reviews, the most in Longmont.
Best Pool Builders in Longmont, CO (2026)
70 pool builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Longmont: Alpine Hot Tub Moving & Hot Tub Repair Service, CR Score 61/100; 5.0★ from 579 Google reviews; open Saturdays until 5 PM.
- 4
Best for emergencies (open 24/7): Neptune Pools, posts 24/7 hours; ranked #4 of 70.
- 9
Most-reviewed: Front Range Water Heater and Excavation, 564 Google reviews at 4.9★, the most of 70 ranked after Alpine Hot Tub Moving & Hot Tub Repair Service; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
70 Longmont pool builders are ranked here by CR Score, from ten published factors. 6 are open 24/7, 30 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 4.7★ across 70 rated businesses.
Top 10 pool builders in Longmont at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Alpine Hot Tub Moving & Hot Tub Repair Service | 61 | 5.0★ (579) | Denver, 29 mi away | Sat | Overall |
| 2 | Marina Pool Spa & Patio | 57 | 4.5★ (168) | Lakewood, 31 mi away | Sat · Sun | — |
| 3 | Aquality Pools & Spas | 56 | 4.9★ (67) | Broomfield, 17 mi away | — | — |
| 4 | Neptune Pools | 56 | 4.6★ (32) | Centennial, 34 mi away | 24/7 | Emergencies |
| 5 | Crystal Clear Pools & Spas Inc | 55 | 4.4★ (114) | Denver, 23 mi away | Sat | — |
| 6 | Mr Pool | 55 | 4.2★ (47) | Boulder, 13 mi away | Sat | — |
| 7 | Northern Colorado Pools | 55 | 4.9★ (27) | Johnstown, 7 mi away | Sat · Sun · Evenings | — |
| 8 | Diamond Spas | 55 | 4.4★ (22) | Longmont | — | — |
| 9 | Front Range Water Heater and Excavation | 54 | 4.9★ (564) | Loveland, 15 mi away | — | Most reviews |
| 10 | Bond Aquatics | 54 | 5.0★ (18) | Greeley, 8 mi away | — | — |
The 70 best pool builders in Longmont, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Lakewood, 31 mi away
57/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.5★ from 168 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Broomfield, 17 mi away
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Centennial, 34 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.6★ from 32 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Denver, 23 mi away
55/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.4★ from 114 Google reviews, listed on Google as “Swimming pool contractor”.
#6 Mr Pool
Based in Boulder, 13 mi away
55/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.2★ from 47 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Johnstown, 7 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Masonry contractor”.
#8 Diamond Spas
Based in Longmont
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.4★ from 22 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Loveland, 15 mi away
54/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 564 Google reviews.
#10 Bond Aquatics
Based in Greeley, 8 mi away
54/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Englewood, 35 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 92 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Longmont
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Denver, 19 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.1★ from 89 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Johnstown, 8 mi away
53/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Denver, 33 mi away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Lakewood, 34 mi away
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 21 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Boulder, 13 mi away
53/100CR ScoreRanked #17 because of its Google rating and trade focus: 3.1★ from 71 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Golden, 31 mi away
53/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Greeley, 12 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Swimming pool repair service”.
#20 Clarity Pools
Based in Lafayette, 15 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 2.8★ from 10 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Fort Collins, 28 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.1★ from 71 Google reviews, listed on Google as “Swimming pool repair service”.
Based in Berthoud, 10 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.5★ from 15 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Longmont
53/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Erie, 9 mi away
53/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Swimming pool contractor”.
Based in Highlands Ranch, 34 mi away
53/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Swimming pool repair service”.
Pool builders ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 70 ranked pool builders here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | River Pools Northern Colorado | 53 | 5.0★ (9) | 9 mi |
| 27 | Aqua Splash Pools | 52 | 5.0★ (11) | 35 mi |
| 28 | Puddle Pool Services | 52 | 4.5★ (8) | 30 mi |
| 29 | Hanavan Pools & Spas Inc. | 52 | 5.0★ (7) | 11 mi |
| 30 | Colorado Pool Liners | 52 | 5.0★ (34) | 33 mi |
| 31 | Pool Doctor | 51 | 4.6★ (50) | 33 mi |
| 32 | The Pool Man, Inc. | 51 | 4.8★ (52) | 36 mi |
| 33 | Concrete Solutions | 51 | 4.8★ (129) | 23 mi |
| 34 | Aqua Tech Pool & Spa Solutions | 51 | 5.0★ (15) | 26 mi |
| 35 | Outdoor Craftsmen | 51 | 4.0★ (57) | 7 mi |
| 36 | Alligator Spa And Pool | 51 | 4.1★ (9) | 35 mi |
| 37 | Cover Care, LLC | 51 | 4.6★ (61) | 39 mi |
| 38 | Pool & Spa Medics | 51 | 3.6★ (47) | 17 mi |
| 39 | Infinity Pools | 51 | 4.1★ (17) | 19 mi |
| 40 | Leo's Pools and Spa Service | 51 | 2.0★ (4) | 36 mi |
| 41 | Altitude Pool Services | 51 | 3.4★ (5) | 20 mi |
| 42 | Elevation Pools | 51 | 4.3★ (22) | 25 mi |
| 43 | Laguna Pools | 50 | 4.7★ (30) | 35 mi |
| 44 | Metro Pools Colorado | 50 | 4.4★ (35) | 32 mi |
| 45 | 360 Pool Pros | 50 | 5.0★ (7) | 19 mi |
| 46 | ZANARES XTERIOR LIVING | 50 | 5.0★ (7) | 31 mi |
| 47 | American Leak Detection of Northern Colorado | 50 | 4.9★ (93) | 18 mi |
| 48 | Denver Pools & Spas | 50 | 5.0★ (4) | 30 mi |
| 49 | Breakthrough Service | 49 | 4.5★ (8) | 7 mi |
| 50 | Rock n Roll Stoneworks | 49 | 5.0★ (31) | 19 mi |
Also serving Longmont
20 more pool builders within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Absolute Pool Management LLC | 5.0★ (1) | 20 mi |
| Blue Water Pools | 5.0★ (2) | 28 mi |
| Denver PERFECT pool plaster | 5.0★ (2) | 35 mi |
| Denver Pool Resurfacing | 5.0★ (1) | 28 mi |
| Denver Pools & Spas | 5.0★ (1) | 31 mi |
| Eco Friendly Pools | 4.0★ (2) | 32 mi |
| JL Pools and Spas LLC | 5.0★ (2) | In Longmont |
| Klear Pools | 1.0★ (1) | 12 mi |
| Majestic Water Spouts | 5.0★ (2) | 23 mi |
| Modern Aquatic Construction LLC | 5.0★ (1) | 24 mi |
| Platinum Property & Pool Management | 5.0★ (2) | 36 mi |
| Pool Shark, Inc. | 3.5★ (2) | 26 mi |
| Pools by TipTop | In Longmont | |
| Premier Pool Fence | 5.0★ (3) | In Longmont |
| Ranch Tank Co. Ltd | 5.0★ (2) | 29 mi |
| Renu Pool Plastering | 5.0★ (1) | 19 mi |
| Ridgeline Pools and Spas | 5.0★ (2) | 22 mi |
| Rocky Mountain Pool Builders | 3.0★ (2) | 24 mi |
| Seewald Construction | 5.0★ (2) | 9 mi |
| WET Pools & Spas | 5.0★ (2) | 18 mi |
How we ranked Longmont pool builders
We scored 70 Longmont pool builders on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Longmont data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Pool builders in Longmont: frequently asked questions
Who is the best pool builder in Longmont?
By CR Score, the highest-ranked pool builder in Longmont, CO is Alpine Hot Tub Moving & Hot Tub Repair Service with a CR Score of 61/100. It has 5.0★ from 579 Google reviews. It is open Saturdays until 5 PM. Marina Pool Spa & Patio (#2) and Aquality Pools & Spas (#3) follow. We ranked 70 pool builders on ten factors, last updated November 3, 2026.
How many pool builders are there in Longmont?
ContractorsRanked ranks 70 pool builders serving Longmont, CO. 3 of them are based in Longmont; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of November 2026.
Which pool builders in Longmont are open 24/7?
6 ranked pool builders in Longmont post 24/7 hours. The highest-ranked are Neptune Pools (#4), Denver Pool Maintenance (#15) and Clarity Pools (#20). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pool builders in Longmont work on weekends?
30 of 70 ranked pool builders post Saturday hours and 15 post Sunday hours. The highest-ranked open Saturdays are Alpine Hot Tub Moving & Hot Tub Repair Service (#1), Marina Pool Spa & Patio (#2) and Neptune Pools (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Longmont pool builders have?
The median Google rating among 70 rated pool builders in Longmont is 4.7★, with a median of 15 reviews. Alpine Hot Tub Moving & Hot Tub Repair Service has the most, 579 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank pool builders?
Each pool builder gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do pool builders outside Longmont count in this ranking?
Yes, if they are within 40 mi of the Longmont city center, our service radius for pool builders. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can pool builders pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Longmont
- November 2026: CR Scores recalculated for 70 pool builders serving Longmont.
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